Lázně Kynžvart
, Czech Republic
13th century
Blansko, Czech Republic
1431
Hazlov, Czech Republic
13th century
Znojmo, Czech Republic
1358
Hamr na Jezeře, Czech Republic
13th century
Dolní Dobrouč, Czech Republic
13th century
Úsov, Czech Republic
c. 1250
Vlastislav, Czech Republic
14th century
Konstantinovy Lázně, Czech Republic
c. 1300
Týnec nad Sázavou, Czech Republic
13th century
Bor, Czech Republic
13th century
Chlístovice, Czech Republic
1426
Česká Lípa, Czech Republic
13th century
Libá, Czech Republic
13th century
Skalná, Czech Republic
14th century
Stráž pod Ralskem, Czech Republic
13th century
Bochov, Czech Republic
15th century
Toužim, Czech Republic
1469
Předhradí, Czech Republic
13th century
Klášterec nad Ohří, Czech Republic
1317
The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.